Sound reproduction system



Nov. 8, 1966 'r. A. PATTI 3,283,348

SOUND REPRODUCTION SYSTEM Filed Oct. 21, 1965 United States Patent M3,283,848 SOUND REPRODUCTION SYSTEM Thomas Allan Patti, Rte. 1, Highway167, Hartford, Wis. Filed Oct. 21, 1965, Ser. No. 499,435 1 Claim. (Cl.18131) This invention relates to sound reproduction systems, or thelike, and more particularly to an arrangement or mounting of one or morespeakers in a cabinet to faithfully reproduce either vocal orinstrumental renditions in a plurality of directions with clearness andwithout distortion.

In the design of speaker systems to amplify either voice or musicalcompositions it is necessary not only to produce an instrument that willproject the sound in a plurality of directions but also to give a clearreproduction free from reverberation and echoes.

It is an object of this invention to provide a sound reproduction systemwhich will give a large volume of sound with clear tones.

Another object of the invention is to provide a sound reproductionsystem which will reproduce sound more faithfully than those nowavailable.

A further object is to provide a sound reproduction system that willproject sound in a plurality of directions with a minimum of distortion.

Other objects will become apparent upon considering the followingspecification which when considered in conjunction with the appendedclaim will describe a preferred form of the invention.

In terms of broad inclusion the invention comprises, a cabinet having apolygonal top at the upper end of the cabinet and a matching polygonalbottom at the lower end of the cabinet, substantially rectangular sidepieces secured between the polygonal top and bottom, said side pieceshaving openings adjacent the polygonal top member, a speaker supportelement intermediate the top and bottom members, said element having aplurality of apertures extending vertically therethrough for thetransmission of sound, and a speaker secured on a vertical axis to saidelement and adapted to reproduce sound and direct it through all ofsaidapertures.

In the drawings:

FIG. 1 is a vertical cross-section taken through the center of the soundreproduction system made in conformance with the present invention; and

FIG. 2 is a horizontal cross-section taken on the line 2-2 of FIG. 1.

Referring to the drawings, a speaker cabinet, generally designated 10,has a polygonal top or closure 12 and a lower polygonal closure 14joined by vertical panels 15.

The top 12 and the bottom 14 have been shown as square, but it will beunderstood that they may be composed of any number of sides desired.

As shown in FIG. 2 the cabinet may be divided in half by a polygonaltransverse partition 17 conforming in shape to the top and bottom so asto form two sound chambers 20-21. If desired, one of the chambers may beeliminated and the unit operated with a single speaker.

In order to mount speakers 25 in their chambers 20-21, mounting rings orpartitions 2727 are secured between the sides of the cabinet and areprovided with a 3,283,848 Patented Nov. 8, 1966 plurality-of apertures29-29 therethrough to permit free passage of sound through each of thechambers 20-21.

The individual speakers 25-25 are joined to the apertured partitionsabout the periphery of the central aperture 29 therein.

Sound from the speakers 2525 travels upwardly through the circularapertures 2929 and is forced out through apertures 30 passing througheach of the panels 15 located both below the top 12 and below thepartition 17.

In order to prevent a reverberating eiTect due to the closed bottomchambers 20-21, the interior of the cabinet and both the top 12 and thebottom closures 14 are lined on the inside of the cabinet with fiberglass 32 or other sound absorbing material, and both the top and bottomsides of the central partition 17 are also lined with fiber glass or thelike. The provision of the fiber glass linings prevents reverberationsand produces clear sound from the speakers.

A suitable footing structure, such as shown at 35, in FIG. 1, may beprovided or the cabinet 10 may be equipped with casters (not shown).

Having thus described the invention it will be realized that it issusceptible to various changes and modifications and that such changesmay be made Without departing from the spirit of the invention or thescope of the subjoined claim.

That which is claimed as new and is desired to be secured by UnitedStates Letters Patent is:

A sound reproduction system adapted for use in reproducing voice orinstrumental presentation comprising, a cabinet, a regularpolygonal-shaped cover member for said cabinet, a regular polygonalbottom member closing the bottom of said cabinet, said polygonal membershaving the same number of sides, rectangular side members joining saidcover and bottom members to form the speaker cabinet, each of said sidemembers having apertures therein adjacent the tops thereof for the exitof sound, a speaker mounting ring carried within said cabinet sidemembers and below said apertures, a speaker including a speaker conecarried by said mounting ring, said mounting ring providingsubstantially a free passage of air between the speaker and the sidepanels.

References Cited by the Examiner UNITED STATES PATENTS 2,065,367 12/1936Evans 18l-31 2,618,352 11/1952 Leslie 18l-27 2,801,704 8/1957 Martinl8131 2,806,546 9/1957 Galyon et al l8131 FOREIGN PATENTS 489,588 7/1938Great Britain.

OTHER REFERENCES German printed applicated $29444, September 6, 1956(R-usch).

RICHARD B. WILKINSON, Primary Examiner. STEPHEN J. TOMSKY, Examiner.

